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In this paper, in order to keep a flexural strengthening FRP sheet for RC beam from debonding by ultimate state, an applicability of U-shaped jacketing method was experimentally discussed. Here, static loading tests for flexural strengthened RC beams with AFRP sheet were conducted taking jacketing area (height×width) and jacketing volume of AFRP sheet as variables. From this study, it was seen that jacketing the RC beams from the lower edge to half height of the neutral axis of rebar yield area in the equi-shear span using AFRP sheet with 15% volume of flexural strengthening one, the RC beams can be upgraded upto the calculated ultimate state

An Experimental Study on Debonding Control of Flexural Strengthened RC Beams with AFRP Sheet